Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
140016excellentexcellent31excellent
130021goodexcellent31excellent
120030goodexcellent31excellent
110016excellentexcellent21excellent
100044goodexcellent31excellent
090016excellentexcellent31excellent
080018excellentexcellent41excellent
070022goodexcellent41excellent
060021goodexcellent31excellent
050015excellentexcellent21excellent
040014excellentexcellent21excellent
030019excellentexcellent21excellent
020016excellentexcellent21excellent
010013excellentexcellent21excellent
000015excellentexcellent21excellent
230016excellentexcellent11excellent
220013excellentexcellent21excellent
210011excellentexcellent11excellent
200010excellentexcellent11excellent
19009excellentexcellent21excellent
18008excellentexcellent11excellent
170013excellentexcellent21excellent
160012excellentexcellent21excellent
150014excellentexcellent21excellent